/* eslint-disable camelcase */
import axios from 'axios'
import { ElNotification, ElMessageBox, ElMessage, ElLoading } from 'element-plus'
import { getToken } from '@/utils/auth'
import errorCode from '@/utils/errorCode'
import { tansParams, blobValidate } from '@/utils/bh'
import cache from '@/plugins/cache'
import { saveAs } from 'file-saver'
import useUserStore from '@/store/modules/user'

let downloadLoadingInstance: ReturnType<typeof ElLoading.service>

// 是否显示重新登录
export const isRelogin = { show: false }

// 创建axios实例
const service = axios.create({
	// axios中请求配置有baseURL选项，表示请求URL公共部分
	baseURL: import.meta.env.VITE_APP_BASE_API,
	// 超时
	timeout: 10000,
	headers: {
		'Content-Type': 'application/json;charset=utf-8'
	}
})

// request拦截器
service.interceptors.request.use(
	(config) => {
		// 是否需要设置 token
		const isToken = (config.headers || {}).isToken === false
		// 是否需要防止数据重复提交
		const isRepeatSubmit = (config.headers || {}).repeatSubmit === false
		if (getToken() && !isToken && config.headers) {
			config.headers['Authorization'] = 'Bearer ' + getToken() // 让每个请求携带自定义token 请根据实际情况自行修改
		}
		// get请求映射params参数
		if (config.method === 'get' && config.params) {
			let url = config.url + '?' + tansParams(config.params)
			url = url.slice(0, -1)
			config.params = {}
			config.url = url
		}
		if (!isRepeatSubmit && (config.method === 'post' || config.method === 'put')) {
			const requestObj = {
				url: config.url,
				data: typeof config.data === 'object' ? JSON.stringify(config.data) : config.data,
				time: new Date().getTime()
			}
			const sessionObj = cache.session.getJSON('sessionObj')
			if (sessionObj === undefined || sessionObj === null || sessionObj === '') {
				cache.session.setJSON('sessionObj', requestObj)
			} else {
				const s_url = sessionObj.url // 请求地址
				const s_data = sessionObj.data // 请求数据
				const s_time = sessionObj.time // 请求时间
				const interval = 1000 // 间隔时间(ms)，小于此时间视为重复提交
				if (
					s_data === requestObj.data &&
					requestObj.time - s_time < interval &&
					s_url === requestObj.url
				) {
					const message = '数据正在处理，请勿重复提交'
					console.warn(`[${s_url}]: ` + message)
					return Promise.reject(new Error(message))
				} else {
					cache.session.setJSON('sessionObj', requestObj)
				}
			}
		}
		return config
	},
	(error) => {
		console.log(error)
		Promise.reject(error)
	}
)

// 响应拦截器
service.interceptors.response.use(
	(res) => {
		// 未设置状态码则默认成功状态
		const code = res.data.code || 200
		// 获取错误信息
		const msg = errorCode[code] || res.data.msg || errorCode['default']
		// 二进制数据则直接返回
		if (res.request.responseType === 'blob' || res.request.responseType === 'arraybuffer') {
			return res.data
		}
		if (code === 401) {
			if (!isRelogin.show) {
				isRelogin.show = true
				ElMessageBox.confirm('登录状态已过期，您可以继续留在该页面，或者重新登录', '系统提示', {
					confirmButtonText: '重新登录',
					cancelButtonText: '取消',
					type: 'warning'
				})
					.then(() => {
						isRelogin.show = false
						useUserStore()
							.logOut()
							.then(() => {
								location.href = '/index'
							})
					})
					.catch(() => {
						isRelogin.show = false
					})
			}
			return Promise.reject('无效的会话，或者会话已过期，请重新登录。')
		} else if (code === 500) {
			ElMessage({
				message: msg,
				type: 'error'
			})
			return Promise.reject(new Error(msg))
		} else if (code === 601) {
			ElMessage({
				message: msg,
				type: 'warning'
			})
			return Promise.reject(new Error(msg))
		} else if (code !== 200) {
			ElNotification.error({
				title: msg
			})
			return Promise.reject('error')
		} else {
			return Promise.resolve(res.data)
		}
	},
	(error) => {
		console.log('err' + error)
		let { message } = error
		if (message === 'Network Error') {
			message = '后端接口连接异常'
		} else if (message.includes('timeout')) {
			message = '系统接口请求超时'
		} else if (message.includes('Request failed with status code')) {
			message = '系统接口' + message.substr(message.length - 3) + '异常'
		}
		ElMessage({
			message: message,
			type: 'error',
			duration: 5 * 1000
		})
		return Promise.reject(error)
	}
)

// 通用下载方法
export function download(url: string, params: any, filename: string, config: any = {}) {
	downloadLoadingInstance = ElLoading.service({
		text: '正在下载数据，请稍候',
		background: 'rgba(0, 0, 0, 0.7)'
	})
	return service
		.post(url, params, {
			transformRequest: [
				(params) => {
					return tansParams(params)
				}
			],
			headers: { 'Content-Type': 'application/x-www-form-urlencoded' },
			responseType: 'blob',
			...config
		})
		.then(async (data: any) => {
			const isBlob = blobValidate(data)
			if (isBlob) {
				const blob = new Blob([data])
				saveAs(blob, filename)
			} else {
				const resText = await data.text()
				const rspObj = JSON.parse(resText)
				const errMsg = errorCode[rspObj.code] || rspObj.msg || errorCode['default']
				ElMessage.error(errMsg)
			}
			downloadLoadingInstance.close()
		})
		.catch((r) => {
			console.error(r)
			ElMessage.error('下载文件出现错误，请联系管理员！')
			downloadLoadingInstance.close()
		})
}

export default service
